The 21 Best-selling Books of All Time

The fourth book in the series (2000) centers on the Tri-Wizard tournament, a friendly competition between representatives of the Hogwarts School of Witchcraft and Wizardry and two rival schools, and features Harry's first face-to-face meeting with a newly corporeal Voldemort. This series alone causes this list to skew heavily toward fantasy; the genre accounts for one third of the list.